Blind-fastener.



Patented June 25, l90l.

BLl

(Application NEG.

TENEB.

2 Dec. 5, 1900.)

(No Model.)

NITED STATES PATENT Orrrcr.

JOHN H. PINEO, or BROOKLINE, MASSACHUSETTS;

BLlND-FASTENER;

SPECIFICATION forming part of Letters Patent No. 677,267, dated June 25,1901. Application filed December 5,1900. Seria1No.38,752. unmade.)

To aZZ whom it may concern.-

Be it known that 1, JOHN H. PINEO, a citizen of the United States,residing at Brookline, in the county of Norfolk and State ofMassachusetts, have invented a certain new and useful ImprovementinBlind-Fasteners, of which the following is a specification, referencebeing had therein to the accompanying drawlugs.

This invention has reference to improve ments in blind fasts orfasteners.

One object of the invention is to increase the strength of thefasteners.

Another object of the invention is to so construct a blind-fastener thatduplex engagement between the latch and the catch may be had.

The invention consists in the peculiar construction of the spring-latchand of the catch whereby the same is engaged.

The invention also consists in such other novel features of constructionand combination of parts as shall hereinafter be more fully described,and pointed out in the claims.

Figure 1 represents a perspective view of portions of a blind and afixed portion of a house, illustrating the improved fasteners. Fig. 2represents a view of the stool-catch and the latch slide or staple, thelatch being shown in section in locked position. Fig. 3 represents aplan view of the guide for the latch.

Similar characters of reference designate corresponding partsthroughout.

In carrying this invention into practice the object has been to providea blind-fastener of simple construction,but of increased strength,whereby the latch might be more securely engaged when the blind wasfully openedor closed and whereby the blind-latch might be engaged andheld without fully closing the blind.

In the drawings, A represents a portion of the lower rail of a blind, I?the side or wall of the building to which the wall-catch is secured, and(J a portion of the window-stool.

The latch is, as usual, designed to be secured to the lower end or railA of a blind, and comprises the securing-spur 5, having the spring-coils6 and the shank 7. At its free end this shank is bent back and securedupon itself to form the parallel latching-bars 8 and 9, representing theside bars of a loop.

To prevent the lateral movement of this loop and to limit its movementfrom the action of the spring-coils, a rectangular guide 10 is provided,through which the loop of the latch works. This guide has the spurs 11,which may be forced into the lower end of the blind, and the cross-plate12, furnished with the slot 13 to receive the shank of thesecuring-screw 14.

The wall-catch 15 and the stool-catch 16 have securing spurs or devicesof any wellknown construction, their novelty residing in their duplexengagement for the latch bars 8 and 9. The wall-catch 15 has theinclined surface 17, ending at the concave step 18, from which thesecond inclined way 19 extends to the concave step 20, beyond which isthe abutment 21. The stool-catch 16 simi' larly has the inclined portion17', extending upward to provide material for the concave Step 18, fromwhich the inclined way 19' extends to the step 20, beyond which is theabutment 21'.

By reason of the double bars 8 and 9 the guide 10 effects a moresubstantial resistance to any lateral strain on the latch. While theholding power of these double latch-bars when engaged with the duplexcatches of the wall or stool catch is increased by the resistance of theshank 7 to torsional strain as, when in the position shown in Fig. 2,pressure is exerted by the guide 10 on the bar 8, the tendency is toslightly raise that bar which is resisted by the shank.

Where blinds are slammed by the wind, if a single catch be used therebound of-the blind is often so rapid as to prevent the catching of thelatch; but in this construction the double inclines 17 and 19 and the.double latch-bars 8 and 9, riding over the same, exert resistance to themovement of the blind, and if the rebound is so sharp as to prevent theengagement of both bars with their respective catches or steps theprobabilities largely favor the catching of the inner bar 8 or 9,depending on whether the blind is in the open or closed position, in theouter step 18 or 18', and the subsequent duplex engagement when pressureis again applied to the blind.

When outside screens are used, it is often impossible to close theblinds sufliciently to latch the same; but with the improved fastenerclearance of the screen may be had by engaging the latch-bar 8 with thestep 18 of the stool-catch. By the removal of the screen the blind maybe fully closed and both of the latch bars engaged with their respectivecatches.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. Ablind-fastenercomprisinga spring having aplurality of latch-bars separated from each other.

2. A spring-actuatedblind-fastener having duplex latches, incombination. with a sta- 2o tionary fixture having a pair of engagingnotches or catches, for said latches, and an intermediate inclinedsurface.

3. The combination with the shank 7 having the spring-coils and the spurand bent to 25 In testimony whereof I affix my signature 30 in presenceof two witnesses.

JOHN H. PINEO.

Witnessesf WILLIAM G. WA-1T1, H. J MILLER.

